What about a slot machine in the tower when Xur comes?
It would consume 3 - 5 or more strange coins depending on which game you would like to play.
Each one of them gives you the chance of winning, let`s say, more strange coins, legendary engrams, shards (radiant, of course), Heavy Ammo Synth., Telemetries, and even exotics!
It would be a nice addition to the boring and dissapointing xur`s arrival to the tower for the veteran guardians, and those who have 200+ coins have the opportunity to spend them in a way that`s a little more exciting or fun to use.
What do you guys think?